sx1231h Semtech Corporation, sx1231h Datasheet - Page 2

• Manufacturer Part Number: sx1231h
• Description: Low Power Integrated Uhf Transceiver With On-chip +20dbm Pa
• Manufacturer: Semtech Corporation

Table of Contents
1.
2.
3.
Rev 1 - Oct 2011
ADVANCED COMMUNICATIONS & SENSING
1.1.
1.2.
1.3.
2.1.
2.2.
2.3.
2.4.
3.1.
3.2.
3.3.
3.4.
General Description ................................................................................................................................................ 8
Electrical Characteristics....................................................................................................................................... 11
Chip Description.................................................................................................................................................... 16
2.4.1. Power Consumption ................................................................................................................................. 12
2.4.2. Frequency Synthesis ................................................................................................................................ 12
2.4.3. Receiver ................................................................................................................................................... 13
2.4.4. Transmitter ............................................................................................................................................... 14
2.4.5. Digital Specification ...................................................................................................................................15
3.2.1. Reference Oscillator ................................................................................................................................. 16
3.2.2. CLKOUT Output ........................................................................................................................................17
3.2.3. PLL Architecture ....................................................................................................................................... 17
3.2.4. Lock Time .................................................................................................................................................. 18
3.2.5. Lock Detect Indicator................................................................................................................................ 18
3.3.1. Architecture Description ........................................................................................................................... 19
3.3.2. Bit Rate Setting ........................................................................................................................................ 19
3.3.3. FSK Modulation ........................................................................................................................................ 20
3.3.4. OOK Modulation ....................................................................................................................................... 20
3.3.5. Modulation Shaping.................................................................................................................................. 21
3.3.6. Power Amplifiers ...................................................................................................................................... 21
3.3.7. High Power Settings ..................................................................................................................................22
3.3.8. Output Power Summary ........................................................................................................................... 22
3.3.9. Over Current Protection ........................................................................................................................... 22
3.4.1. Block Diagram .......................................................................................................................................... 23
3.4.2. LNA - Single to Differential Buffer ............................................................................................................ 23
3.4.3. Automatic Gain Control ............................................................................................................................ 24
3.4.4. Continuous-Time DAGC........................................................................................................................... 25
3.4.5. Quadrature Mixer - ADCs - Decimators.................................................................................................... 26
3.4.6. Channel Filter ........................................................................................................................................... 26
3.4.7. DC Cancellation ....................................................................................................................................... 27
Simplified Block Diagram ................................................................................................................................ 8
Pin and Marking Diagram................................................................................................................................ 9
Pin Description .............................................................................................................................................. 10
ESD Notice.................................................................................................................................................... 11
Absolute Maximum Ratings .......................................................................................................................... 11
Operating Range........................................................................................................................................... 11
Chip Specification ......................................................................................................................................... 12
Power Supply Strategy.................................................................................................................................. 16
Frequency Synthesis..................................................................................................................................... 16
Transmitter Description ................................................................................................................................. 19
Receiver Description ..................................................................................................................................... 23
Page 2
SX1231H
DATASHEET
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